深部煤炭资源开采高温热害研究

Since China is running out its shallow coal, the deep coal buried under thousands of meters will be the main energy in the future. With the increasing of mining depth, more and more coal mines are faced with heat hazard. It has become the key problem in deep mining. This paper, based on the distribution of coal reserves and characteristics of geothermal fields, forecasts the seriousness and distribution of heat hazard in deep mining. Based on the result of theoretical and experimental research on heat hazard, the paper summarizes and analyzes research advances in the causes of heat hazard, rules of heat transfer between rocks and air, secondary disaster due to high temperature and humidity as well as the technology of cooling system. It is concluded that high temperature and humidity will not only be harmful to workers but also lead to large deformation of rocks and release of methane absorption in coal. Eight research topics about heart hazard in deep mining are put forward in this paper. For the sake of national energy security, basic research on heat hazard is more than necessary now.